%A Yang He, Yang Yihong, Li Ning %T Construction of Keywords-Chinese Library Classification Codes Integrated Thesaurus %0 Journal Article %D 2013 %J Data Analysis and Knowledge Discovery %R 10.11925/infotech.1003-3513.2013.07-08.16 %P 107-113 %V 29 %N 7/8 %U {https://manu44.magtech.com.cn/Jwk_infotech_wk3/CN/abstract/article_3771.shtml} %8 2013-08-25 %X Based on years of massive manual indexing data, this paper constructs a natural language classification thesaurus with Mutual Information (MI), Chi-Square (χ2) and Maximum Likelihood Estimate (MLE) to analyze the corresponding relation between keywords and Chinese Library Classification Codes. The performances of the Keywords-Chinese Library Classification Codes Integrated Thesaurus used for automatic indexing of sci-tech literatures are tested by close and open testing.